Mike, I agree& disagree with what they recommended.

You can mark everything where it is at (.5mm pencil)and then try some moves, if things don't get better you can always put them back where they were before you started.
Have you tried the easton archery guide or 5 shots broadhead tuning link?

Going off of memory I'd say you need to move your rest up a small portion at a time and once the BH & FP come together you would then move the rest in to the right a smidgen at a time until the FP's & BH's come together. You will in the end need to move your sights to match your new point of impact at a given yardage.
THIS IS considering your arrows are spined right for your bow & you are a right handed shooter.

I like having my broadheads & fieldtips hitting true so I can switch heads back and forth between mechanicals & fixed blades.

Man a 1.5" fixed blade was going to be a booger to pull off. I don't know of many(any?) that cut that wide as afixed blade. i think one of the crimson talons might. Good thing Dwd got that straightened out.